Shiva

Shiva (Sanskrit: शिव, Śiva) is one of the principal deities of Sanatan Dharma and the supreme deity in the diverse traditions collectively known as Shaivism. He is worshipped both in anthropomorphic form and through the Shiva Linga.
Shiva's sacred imagery brings together several dimensions of his identity. He is portrayed as the great yogi absorbed in meditation, as a householder with Parvati and their family, as Nataraja performing the cosmic dance, and in numerous other forms preserved in Shaiva, Puranic, Agamic and regional traditions.
Vedic literature prominently invokes Rudra, while later Upanishadic, epic, Puranic and Shaiva traditions develop the theology associated with Shiva in increasingly explicit forms. These textual layers should be understood in their respective historical and theological contexts rather than treated as identical accounts.

Shiva embodies profound themes of transformation, transcendence, inner stillness and liberation. His ascetic form represents mastery over attachment and the senses, while his role within cosmic cycles is closely associated with dissolution that makes renewal possible.
In Shaiva traditions, Shiva is not understood merely as a deity performing one cosmic function. Different Shaiva schools articulate his nature in distinct ways, including understandings of Shiva as the Supreme Reality, supreme consciousness, Lord and source of liberation.
His association with yoga, meditation and tapas gives Shiva a particularly important place in traditions concerned with self-discipline and spiritual realization. At the devotional level, devotees also approach him through prayer, mantra, abhisheka, vrata, pilgrimage and temple worship.

Shiva is represented through a rich body of sacred iconography. The Shiva Linga is one of his most important forms of worship. In anthropomorphic representations, Shiva is commonly shown with matted hair (jata), the crescent moon, the river Ganga associated with his locks, the third eye, a serpent, the trishula (trident), damaru (drum) and sacred ash.
Nandi, the bull, is Shiva's vahana and occupies an important place in Shaiva temple tradition. Shiva may also be depicted as Nataraja, Lord of Dance, whose cosmic dance expresses profound theological ideas concerning creation, preservation, dissolution, concealment and grace in Shaiva interpretation.
Individual symbols and representations can carry different theological explanations across texts, sects, temples and regional traditions; their meanings should therefore not be reduced to a single universal interpretation.

Shiva worship is expressed through numerous Shaiva traditions and regional practices across India and beyond. Common devotional forms include worship of the Shiva Linga, abhisheka, mantra-japa, temple darshan, offerings, vrata, meditation and pilgrimage.
“Om Namah Shivaya” is among the most widely revered Shaiva mantras. Ritual practices, initiation requirements, mantras, offerings and detailed procedures may differ according to sampradaya, Agamic tradition, temple custom, lineage and region.
Major forms and theological manifestations associated with Shiva include Mahadeva, Maheshvara, Rudra, Shankara, Nataraja, Dakshinamurti, Ardhanarishvara, Bhairava and Pashupati, among others. These forms should eventually receive separate knowledge treatment where their theological or ritual significance warrants it rather than being collapsed into a single description.

Rigveda — hymns to Rudra, especially 1.114 and 2.33.
Yajurveda — Śrī Rudram / Śatarudrīya tradition, an important Vedic liturgical foundation of Rudra-Shiva worship.
Śvetāśvatara Upaniṣad — important Upanishadic source for Rudra and later Shaiva theological interpretation.
Mahabharata — contains extensive traditions concerning Shiva.
Shiva Purana — major Puranic source centred on Shiva traditions and narratives.
Linga Purana — major Puranic source concerning the Linga and Shiva theology.
Shaiva Agamas — foundational textual traditions for many forms of Shaiva temple theology, ritual and worship.